The Study On The Pattern Of Ecology Water-Saving Irrigation Of Paddy Rice

Our country is the biggest paddy rice production and expense country in the world, the national paddy rice output approximately composes 40% of the grain crops output, and the paddy rice sown area amounts to more than 6 million hectares, approximately composing 28% of the total area of our grain crops.It has provided the powerful safeguard for our country grain security and the national security. Paddy rice's planter needs massive water resources,which take above above 45% of the using water . The existing paddy rice water-saving technology mostly pay much attention to saving water,but neglecte the frailty of our farmland ecological environment.lt has not made the economical, the ecology and the social benefits as an organic unification. And caused in the rice paddy quite a part to dissolve the chemical fertilizer, the agricultural chemicals along with draining water, the side-infiltrating or the vertical leakage, which have caused the serious pollution to the ground water and the rivers and streams lake.Simultaneously,unscientific water saving irrigation have also caused the the dissemination of massive aquatic plant diseases, which directly affected the human health.Since the 1980s, many scholars have do the massive research on water saving measures to paddy rice, but so far, our scholars have made a few quantitative investigations to the water saving measures to the paddy rice ecology. On the base of the optimized analysis of the irrigates technicals of paddy rice,this article points out the concept about ecology saveing water technology of paddy rice,which takes the ecology principle as the instruction,and can guarantee the farmland ecological environment security and the paddy rice produces the sustainable development.Under this premise, all agricultural saving water technology and the ecological environment preservation technology close union which can save the water resources or obtain the greatly combined earnings under the same water consumption.This article adopt the field-testing research technique, the room-analysising and the room-simulating on the optimized saving water irrigation pattern and the flooding...